Heater bundles having variable power output within zones

A heater system comprising:

• a heater bundle comprising:
• a plurality of heater assemblies, at least one of the heater assemblies comprising a plurality of heater units aligned along a longitudinal direction of the at least one of the heater assemblies, the at least one of the heater assemblies defining a plurality of independently controlled heating zones, and the at least one of the heater assemblies comprising a physical construction disposed at one of the plurality of heater units such that the one of the plurality of heater units has a structure different from that of an adjacent one of the plurality of heater units due to presence of the physical construction and such that the physical construction causes the one of the plurality of heater units to deliver a power output different from that of the adjacent one of the plurality of heater units;
• and
• a plurality of power conductors electrically connected to the heater units;
• means for determining at least one of heating conditions and heating requirements;
• and
• a power supply device including a controller configured to modulate power to the independently controlled heating zone through the power conductors based on the at least one of heating conditions and heating requirements to provide a desired power output along a length of the at least one heater assembly.

A heater system comprising:

• a heater assembly comprising a plurality of heater units aligned along a longitudinal direction of the heater assembly, the heater assembly defining a plurality of independently controlled heating zones, and the heater assembly comprising a physical construction disposed at one of the plurality of heater units such that the one of the plurality of heater units has a structure different from that of an adjacent one of the plurality of heater units due to presence of the physical construction and such that the physical construction causes the one of the plurality of heater units to deliver a power output different from that of the adjacent one of the plurality of heater units;
• a plurality of power conductors electrically connected to the heater units;
• and
• a power supply device including a controller configured to modulate power to the independently controlled heating zone through the power conductors based on at least one of heating conditions and heating requirements to provide a desired power output along a length of the heater assembly.